Shenzhen Smart Education Technology Co., Ltd. is located in Guangdong China and was founded in 2008. We specialize in supplying electronic educational products. Our company is one of the leading manufacturers to use "invisible" OID codes (Optic Identification/Optic Index pens of monomer) technology in "OID talking pens" and "OID teacher's pointers". We have increased R&D investment in improving OID pens, OID equipped books and audio compression.